Exact properties of the chemical potential-density relation at finite temperature in the Hubbard model

Abstract

We draw some rigorous conclusions about the functional properties of the $\mu -\rho$ relation in the Hubbard model based on symmetry considerations and unitary transformations. It is shown that the charge susceptibility reaches its local extreme at half-filling. Exact expressions are obtained in two limiting cases.

References in corpus (1)

• The Mott-Hubbard transition and the paramagnetic insulating state in the two-dimensional Hubbard model

Cited by in corpus (2)

• The Hubbard model within the equations of motion approach
• The 2-site Hubbard and t-J models